<template>
<div>
  <div class="search">
      <input v-model="keyword" class="search-input" type="text" placeholder="输入城市名或拼音" />
  </div>
  <div class="search-content" ref="search" v-show="keyword">
    <ul>
      <li class="search-item border-bottom" v-for="item of list" :key="item.id" @click="handleCityClick(item.name)">{{item.name}}</li>
      <li class="search-item border-bottom" v-show="hasNoData">没有找到匹配数据</li>
    </ul>
  </div>
</div>
</template>

<script>
import Bscroll from 'better-scroll'
import { mapMutations} from 'vuex'
export default {
  name: 'CitySearch',
  props: {
    cities: Object
  },
  data () {
    return {
      keyword: '',
      list: [],
      timer: null
    }
  },
  computed: {
    hasNoData () {
      return !this.list.length
    }
  },
  watch: {
    keyword () {
      if (this.timer) {
        clearTimeout(this.timer)
      }
      if (!this.keyword) {
        this.list = []
        return
      }
      this.timer = setTimeout(() => {
        const result = []
        for (let i in this.cities){
          this.cities[i].forEach((value) => {
            if (value.spell.indexOf(this.keyword) > -1 || value.name.indexOf(this.keyword) > -1) {
              result.push(value)
            }
          })
        }
        this.list = result
      },100)
    }
  },
  methods: {
    handleCityClick (city) {
          this.changeCity(city)
          this.$router.push('/')
      },
      ...mapMutations(['changeCity'])
  },
  mounted () {
    this.scroll = new Bscroll(this.$refs.search)
  }
}
</script>

<style lang="stylus" scoped>
@import '~styles/varibles.styl'
   .search{
        height: .72rem;
        padding: 0 .1rem;
        background: $bgColor;
   }
   .search-input{
        box-sizing: border-box;
        width: 100%;
        height: .62rem;
        padding: 0 .1rem;
        line-height: .62rem;
        text-align: center;
        border-radius: .06rem;
        color: #666;
   }
   .search-content{
      z-index: 1
      overflow: hidden
      position: absolute
      top: 1.58rem
      left: 0
      right: 0
      bottom: 0
      background: #eee
   }
   .search-item{
    line-height: .62rem
    padding-left: .2rem
    background: #fff
    color: #666
   }
</style>